Gardner Denver L160 110A V2, Руководство пользователя

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Design and function 3
January 2017 America 21 /72
No. Designation No. Designation No. Designation
2 Suction regulator; resid-
ual pressure 1 - 1.5 bar /
15 - 22 psi
14 Pressure reducing valve 28 Cooling water solenoid
valve (Y) (only L xxxW)
2.1 Adjusting cylinder 15 Pressure retention and
check valve
Opening pressure
4 - 4.5 bar / 58 - 65 psi
29 Adjustable throttle valve
(only L xxxW)
2.2 Throttle 16 Aftercooler compressed
air
30 Check valve
3 Electric motor 17 Cooling air fan (after-
cooler)
31 Frequency converter
L160RS - L290RS;
Optional
4 Screw compressor 18 Final compression pres-
sure sensor (B2)
32 Motor lubrication system
E4/E5
5 Final compression tem-
perature sensor (R2)
19 3/2-way solenoid valve
(regulator valve) (Y1)
33 Oil suction non-return
valve
6 Pressure vessel 20 Blow-off valve (Y4) 34 Motor temperature moni-
toring (R1)
7 Fine precipitator 21 Oil temperature regu-
lator; opening starts at
55 °C / 131 °F
35 Line pressure sensor (B1)
8 Oil drain 22 Oil level indicator
9 Safety valve 23 Suction filter monitoring
(S7); optional
Switching point 50mbar /
20 in H
2
O
10 Oil filter monitoring (S5);
optional
Switching point 2.2 bar /
32 psi
24 Fine separator monitor-
ing (S6); optional
Switching point 1.2 bar /
17 psi
11 Oil filter 25 Speed-controlled cooling
air fan (oil cooler)
12 Oil cooler
Chart 3-2: Components
3.4 Oil circuit
At oil temperatures below 55°C / 131°F, the oil
flows from the pressure vessel (-6-) through the
cooler bypass pipe directly to the oil filters (-11-)
and is then injected into the screw compressor
(-4-).
If the oil temperature reaches between 55°C /
131°F and 70°C / 158°F, the oil flow is divided
between oil cooler (-12-) and bypass pipe.
At oil temperatures upwards of 70°C / 158°F, the
entire oil flow flows through the oil cooler (-12-).
The oil separated in the oil fine separator (-7-) is
fed back to the compressor through the oil suction
pipe.
The entire oil circuit is based on differential
pressure in the system. If you account for
differential pressure within the oil circuit of approx.
2 bar / 29 PSI, then the oil is injected in the screw
compressor with approx. 8bar / 116PSI at a vessel
pressure of, for example, 10bar / 145PSI.